Bread-mixing apparatus.



N. C. COTABISH & E. B. GAFKEY.

BREAD MIXING APPARATUS.

APPLICATION FILED JUNE 18, I915.

Patented May 9,1916.

IN VEN TORS NEL SUN C. CUTABISH E WIN BIGAFKBY BY Man ATTORNEY WITNESSUNITED? STATES PATENT. OFFICE.

NELsoN c. coTAEIs'H, 01 LAKEWOOD, AND EDWIN- B. GAFKEY, 0E CLEVELAND,OHIO.

BREAD-MIXING APPARATUS.

Specification of Letters Patent.

Patented May 9, 1916.

To all whom it may concern Be it known that we, NELSON C. (IOTA- BISHand EDWIN B. GAFKEY, citizens of the United States, and residents,respectively, of Lakewood, in the county of Ouyahoga and State of Ohio,and Oleveland, in the county of Ouyahoga and State of Ohlo, haveinvented a .certain new and useful Improvement in Bread-MixingApparatus, of which the following is a full, clear, and exactdescription.

Our invention relates to improvements in bread mixing apparatus. Thereare a number of devices on the market for this purpose, but theseusually are constructed in such a way that the parts are very difficultto remove for cleaning, in fact, can only be removed by laboriouslytaking the entire device apart.

One object of our invention is to so construct the mixer that the partsto be cleaned are readily removable without the use of any toolswhatever.

Other objects will appear in the appended description.

In the drawings :Figure 1 is a longitudinal cross section along the lineA-A of Fig. 2. Fig. 2 is an end view of Fig. 1 taken from the left. Fig.3 is an end view of the mixing bowl taken from the right. Fig. 4 is adetail view of the mixing paddle.

In the drawings, 1 represents a support ing base preferably of metal,having vertical standards 2 and 3 between which is placed the mixingbowl 4. The bowl consists of two end-members 5 and 6 and asemicylindrical body 7, preferably of sheet metal, open at the top andadapted to receive a mixing or kneading or stirring blade. In Fig. 4 asuitable form of stirring blade is shown by way of example, consistingof two diametrically opposite stirring arms 9 connected by integral bars10 to a central shaft 11. One end of this shaft has a conical socket 12and the other end has a non-circular socket 13 for a purpose to bereferred to hereafter.

The standard 2, which is adjacent the socket 13 in the shaft 11, has afixed bushing 1-4 therein, adapted to receive a rotatable shaft 15. Theend of this shaft extends through an opening in the end 5 of the bowland has a square or other non-circular end 16 which engages thesimilarly shaped socket 13 of the mixing blade. A collar 17 on the shaftprevents it from sliding out of the bushing. To turn the shaft 15 andthe blade which is in engagement therewith, we have shown by way ofexample a gear 18 and a worm 19 which may be driven by an electric motoror by any other source of power. In the other standard 3 adjacent theend 6 of the bowl, is inserted aslidable bushing or sleeve 20 which maybe adjustably fixed in position by means of a thumb screw 21. A spindle22 passing through the sliding bushing and an opening in the end- 6,fits into the socket 12 in the axis of the blade. The reduced portion 23of the spindle passes through a corresponding opening in the bushing 20.Spring 24 normally maintains the spindle 22 in engagement with thesocket bearing 12 of the paddle and an eccentric lever 25 is pivoted at26 in a slot 26 of the member 23, for withdrawing the spindle to permitthe ready removal of the blade.

The end 5 of the bowl has a circular boss 5 with one or more notches 5",in which fits a detent 6 pivoted between ears 6". The ends 5 and 6 arepreferably made identicgl so that the bowl may be turned end for en Whendough is being mixed the bowl will be locked from turning by the detent6. When the dough is to be removed, the detent will be raised and thebowl rotated to the position shown in dotted lines in Fig. 2 where itmay be locked by engaging the detent with another notch in the boss 5'.

The further operation of the apparatus and the advantages thereof willbe apparent, but an explanation will be made of the manner of taking thedevice apart for cleaning. The mixing blade is the part that is mostdifficult to clean on account of its irregular shape, and to remove it,all that is necessary is to turn cam lever 27 upward until the fiatsurface 28 abuts against the end of the sleeve 20. As the cam isrevolved the spindle is pulled out of socket 13 in the blade, where itwill remain until the lever is moved in the reverse direction. Afterhaving withdrawn the spindle the mixing blade can be readily removed bysliding it off the lug 16.

\Vhen it is desired to remove the mixing bowl this can be done byloosening the thumb screw 21 and sliding the bushing 20 outward untilthe latter clears the end of the bowl. The bowl can then be lifted out.It will of course be apparent that the bowl can be removed in the sameway, irrespective of Whether the mixing blade has been removed or not.

Having described our invention, what we claim is 1. In bread kneadingapparatus, a bowl to contain the dough, supporting standards at each endof the bowl, a driving shaft ex tending through one standard and one endof said bowl, a sleeve slidably fitting in the other standard andabutting against the other end of the bowl, a spindle in said sleeveextending through said other end of the bowl, a mixing blade in the bowlhaving one end secured to the end of the driving shaft and the other endpivotally connected to the end of the spindle, means for holding thespindle in pivotal engagement with the blade and means for locking thesleeve in the standard to prevent displacement of the bowl.

of said bowl, a sleeve slidably fitting in the other standard andpivotally supporting the other end of the bowl, a spindle in the sleeveextending through said other end of' the bowl, a mixing blade in thebowl having one end secured to the end of the driving shaft and theother end pivoted to the end of the spindle, a spring in the bushingmaintaining the spindle in engagement with the blade, means to withdrawthe spindle against the tension of the said spring and means for lockingthe sleeve in the standard.

In testimony whereof, we hereunto affix our signatures.

NELSON C. COTABISH. EDWIN B. GAFKEY.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. 0."

